8/9 I tried to change the code but I really can't see the problem. Please Help!


#1

Here is the code:

lloyd = {
"name": "Lloyd",
"homework": [90.0, 97.0, 75.0, 92.0],
"quizzes": [88.0, 40.0, 94.0],
"tests": [75.0, 90.0]
}
alice = {
"name": "Alice",
"homework": [100.0, 92.0, 98.0, 100.0],
"quizzes": [82.0, 83.0, 91.0],
"tests": [89.0, 97.0]
}
tyler = {
"name": "Tyler",
"homework": [0.0, 87.0, 75.0, 22.0],
"quizzes": [0.0, 75.0, 78.0],
"tests": [100.0, 100.0]
}

Add your function below!

def average(numbers):
total = sum(numbers)
total = float(total)
return total/len(numbers)
def get_letter_grade(score):
if score >= 90:
return "A"
elif score >= 80:
return "B"
elif score >= 70:
return "C"
elif score >= 60:
return "D"
else:
return "F"
def get_class_average(students):
results = []
for student in students:
results.append(average(students))
return average(results)

When I run it it says: Oops, try again. get_class_average([alice]) resulted in an error: unsupported operand type(s) for +: 'int' and 'dict'


#2

@designrunner48266
You do not have a function to pull the data from the dicts.

You have to create a function to get the scores from teh student dicts or you cannot call on the dict information.

EXAMPLE:

def get_average(student):
    return (0.1 * average(student["homework"]) + 0.3 * average(student["quizzes"]) + 0.6     * average(student["tests"]))

Then you call on the get_average and pass that to your class average function.


#4

ohh thanks a lot =) have a nice day


#5

Hmm I had the exact same problem but I DEFINITELY remember writing that part out in the previous exercises.


#6

lloyd = {
"name": "Lloyd",
"homework": [90.0, 97.0, 75.0, 92.0],
"quizzes": [88.0, 40.0, 94.0],
"tests": [75.0, 90.0]
}
alice = {
"name": "Alice",
"homework": [100.0, 92.0, 98.0, 100.0],
"quizzes": [82.0, 83.0, 91.0],
"tests": [89.0, 97.0]
}
tyler = {
"name": "Tyler",
"homework": [0.0, 87.0, 75.0, 22.0],
"quizzes": [0.0, 75.0, 78.0],
"tests": [100.0, 100.0]
}

Add your function below!

def average(numbers):
total = float(sum(numbers))
return total / float(len(numbers))

def get_average(student):
homework = average(student['homework']) * .1
quizzes = average(student['quizzes']) * .3
tests = average(student['tests']) * .6
return homework + quizzes + tests

def get_letter_grade(score):
if score >= 90: return "A"
elif score >= 80 and not score >= 90: return "B"
elif score >= 70 and not score >=80: return "C"
elif score >= 60 and not score >= 70: return "D"
else: return "F"

print get_letter_grade(lloyd)

def get_class_average(students):
results = []
for student in students:
results.append(get_average(student))
return average(results)

I forgot the second ")" behind the results.append(get_average(student)) and spent a solid hour trying to find out the answer. So...spoiler alert if you're still grinding it out. Peace